The definitions and general rules of The Ontario Baseball Association shall apply, subject to certain exceptions as described in these Amendments.

Rules as defined in this document apply to Houseleague divisions from Blastball to Mosquito. In other divisions, play is governed by the rules of the respective leagues (for example: COBA/OBA, SOBA, BOMBA Interlock, and FMSA) in which the WMBA chooses to participate.